Apparatus for overhead submerged arc welding

Abstract

An apparatus for overhead submerged-arc welding includes a driven trolley supporting a vertical slide with a carriage. On the carriage (22) is mounted an arm on the end of which with a possibility of swinging with respect to its longitudinal and transverse planes there is located a forming means. The apparatus also has a hopper with flux accommodating a nozzle for a consumable electrode, a bowl provided in the top part of the hopper through which extends the nozzle for the consumable electrode (14) and means for supplying and pressing the flux. The hopper is mounted on the pivot pin disposed on a front wall (18) of the forming means to extend in parallel with a transverse axis thereof and aligned with the upper and face of a rear wall of the bowl located adjacent to the nozzle. Such location of the pivot pin supporting the hopper (1) and the forming means ensures swinging of the bowl in transverse direction and constant preset flux pressure in the welding zone. The present invention may be used for welding of longitudinal and rotatable annular joints.

We clam: 
     
       1. An apparatus for overhead submerged-arc welding, comprising: a driven trolley supporting a vertical slide with a carriage;   a forming means mounted for swinging with respect to longitudinal and transverse planes with respect to a longitudinal axis of a joint being welded, the forming means being mounted on an abutment at the end of one arm mounted on the carriage of the vertical slide;   a hopper containing flux mounted on a pivot pin and accommodating a nozzle for a consumable electrode;   a bowl provided in a top part of the hopper, the nozzle for a consumable electrode extending through the bowl; and   means for supplying the flux and for pressing it against a work, the pivot pin supporting the hopper being provided on a front wall of the forming means to extend in parallel with a transverse axis thereof and being aligned with an upper end face of a rear wall of the bowl located adjacent to the nozzle.